<template>
    <div>
        <el-button  type="text" @click="backHome">返回首页</el-button>
        <el-button  type="text">返回上一页({{ second }}s)</el-button>
    </div>
</template>

<script>
export default {
    name: 'backBtnGroup',
    data () {
        return {
            second: 5,
            timer: null
        };
    },
    methods: {
        backHome () {
            this.$router.replace({
                name: 'home'
            });
        },
        backPrev () {
            this.$router.go(-1);
        }
    },
    mounted () {
        this.timer = setInterval(() => {
            if (this.second === 0) {
                this.backPrev();
            } else {
                this.second--;
            }
        }, 1000);
    },
    beforeDestroy () {
        clearInterval(this.timer);
    }
};
</script>
